31123032300212 has 12 divisors (see below), whose sum is σ = 54769581982080. Its totient is φ = 15474580305336.

The previous prime is 31123032300211. The next prime is 31123032300233. The reversal of 31123032300212 is 21200323032113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123032300211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21733960388 + ... + 21733961819.

It is an arithmetic number, because the mean of its divisors is an integer number (4564131831840).

Almost surely, 2^{31123032300212} is an apocalyptic number.

It is an amenable number.

31123032300212 is a deficient number, since it is larger than the sum of its proper divisors (23646549681868).

31123032300212 is a wasteful number, since it uses less digits than its factorization.

31123032300212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43467922390 (or 43467922388 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31123032300212 its reverse (21200323032113), we get a palindrome (52323355332325).

The spelling of 31123032300212 in words is "thirty-one trillion, one hundred twenty-three billion, thirty-two million, three hundred thousand, two hundred twelve".